Improvement in magazine-stoves



3 Sheets--Sheet1- E. SM|TH.

Mag azine-Stoves.

Patented Aug. 25,1874.

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3 Sheets--Sheet 2.

E. SMITH.

Magazine-Stoves. N0 ]54,348, Patented Aug. 25,1874.

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UNITED STATEs PATENT OFFICE.

ELIHU sMITII, on ALBANY, NEW YORK.

IMPROVEMENTIN MAGAZINE-Noves.

Specicati'on'forming part of Letters Patent No. 154,348, dated August25, 1874; application filed i July 17, 1874.

' To all whom it may concern Beit known that I, ELIHU SMITH, of the`city and county of Albany and State of New York, have `invented certainnew and useful 'Improvements in Stoves and Furnaces; and I herebydeclare the following to be a full, clear,

and `exact description of the same, reference is a plan view of theinternal base-due B, and

Figs. 6 and7 are sectional views of the rotary annular rim, showing theindependently-movable flnger thereon.

`This invention relates to certain improve- .ments in stoves andfurnaces, and consists in providing a stove or furnace with an externalascending flue, for the purpose of regulating detachable base-due, whichreceives the `heated gases, &c from the stove and conducts them to theascending ilue, for the purpose of increasing the heating power of thestove or furnace; 1n provlding a stove or furnace with an internalbase-flue, in combination withan external detachable base-flue, and adamper,

which controls communication between the said internal and externalbase-fines and the the heating power of the stove or furnace, by

increasing or diminishing the samel without nremoving the externaldetachable base-flue; in providing a stove or furnace withA a'bellshaped grate, the lower centralportion of which is convex,supported within the hre-pot upon an arm of a hot-air flue provided witha concave bearing, which permits the grate to Q be tilted in anydirection, for the purposes of f directing the burning-fuel toward thewall of the nre-pot, and the clinkers to the periphery of the grate, andof increasing the distance between' a portion of the periphery of theAgrate and the wall of the dre-pot, through Vwhich space the clinkers maybe removed with greater facility; in providing a stove or furnace with arotary annular rim surrounding the fire-pot, and having a series oflingers "depending vertically therefrom, one or more of which isindependently movable on said rim, for the purposes of clearing the fireof ashes, Ste., and of permitting an unusually large clinker to beremoved through the opening made by turning up the independentlymovablefinger; in providing a stove or furnace with a rotary annular rimsupported directly beneath the lower edge of the coal-reservoir, andhaving a series of ngers depending vertically therefrom, for the purposeof mixing the unburned coal with the burning coal when the re is verylow, without disturbing the base of the burning coal, and thusendangering the fire; in providing a stove or furnace with an internalhot-air llue surrounding a portion of the` fire-pot, having its bottomplate or lower wall made to pass alternately over and between the micadoors and windows in the fire-pot section of the stove,

`and its external wall provided with perforations -and openings throughwhich heated air is discharged directly into the room, for the purposesof securing alternate illumination and radiation from the same annularsection `of the stove, 'and of providing access through Athe doors insaid annular section tothe grate.

In the accompanying drawings the external detachable base-line A isplaced below the internal base-flue B, which latter is located beneaththe annular plate C of the stove. The external detachable base-flue A isprovided `with 'the air-space R, and is supported in its position bystuds E projecting inwardly from the feet F of the stove. It is onlynecessary to remove one of the feet F in order to remove or replace thebase-fine A. The bottom or lower surface ofthe external detachablebaseflue A slopes downwardly and inwardly, for

the purpose of delecting theheat outwardly 'from beneath the stove,instead `of directly against the door. The internal base-due B isprovided with a fine-strip P, Fig. 5, which causes the heated gases tomake the circuit of saidbase-ue B before entering the externaldetachable base-due A. The base-flue A is provided with collars I J, anda flue-strip, I', which latter causes the heated gases to make thecircuit of the `base-due A before entering the ascending-flue M. Theinternal base-flue B is provided with any opening, K, which re-t ceivesthe collar I. The collar J enters the opening L in the bottom of theascending flue M. Communication is had between the baseiiue B and theascending ue M through the opening N. When the damper O is turned' downthe heated gases, `crc., do not` then e11`- ter the external detachablebase-Hue A, but when the damper O is turned up it closes the opening N,and the heated gases, Snc., pass (see arrows I) from the base-Hue B,into which they have been'conducted by the descending iiue f (seearrows 1) to the external detachable base-flue A, through I K, make thecil'- cuit of the said iue A, and pass through J L to the ascending ueM, thence out at the exit-flue Z.' When the external detachable iiue Ais removed the opening I is closed by turning down the damper O, and theopening .J is closed by a cap or thimble. The heated gases, &c., thentraverse the internal ybaseiiue B, and pass through the opening'N to.the ascending ue M, and thence through the exit-ilueZ to the chimney.The baseiue B has removable caps Q and R, covering openings throughwhich, when the caps are removed, access may be had to the flue B forcleaning it. An air-chamber, S, in the base-flue B is closed by a cap,T, and air is admitted to said chamber S through a tube, the open end Uof which is shown in Fig. 2. .As the air becomes heated it passes up thehot-air iiue V (see arrows 2) into the air-flue k surrounding a portionof the firepot. The upper portion of the hot-airy ue V leads (see arrows4) from the internal hotair iiue 7c to the top plate c of the stove, andconducts the hot air, which does not escape through the perforations oand openings p, through the' perfo'rations into a vboiler or oven, W, orinto the room if the plate v be unoccupied. A damper, Y, in thepartition that separates the descendingy and ascending fines j' and Mpermits a direct draft (see arrows 3) from the {ire-.pot to theexit-ueZ, when said damper Y is open. The arm a of the hot-air iue Vforms the support for the bell-shaped grate c. The central portion ofthe grate c is convex'on the lower side, and this convexity enters aconcavity in the upper end of the arm a, thereby forming a joint whichpermits the grate c to be tiltedv in any direction without displacing itfrom it its central support. The points of the grate-bars are curvedslightly upward to prevent the coal from running over the edge of thegrate c when in its proper position. By inserting a poker through one ofthe doors m, and pushing upon the periphery of the grate c, it canbetilted so as to increase the distance between a portion of its peripheryand a portion of the wall of the fire-pot, and through the increasedspace created by this operation the clinkers, &c., can be readily dumpedinto the ash-pan beneath the grate. The rotary annular rim g, having laseries of ngers, h, depending vertically therefrom, r0-

tates in bearings i secured to the lower edge of the re-potj. By'rotating therim and iingers g h, which may be done by insertinga movableupon the rim g, and may be turned up to make a larger opening betweentheV fingers for the removal of an unusually large clinkers. surrounds aportion of the iire-pot j, and has abottom plate or lower wall, l, whichpasses alternately over and between the mica doors m and windows n. Theouter casing of the stove forms the outer wall of the flue k, and isvprovided with perforations o and openings p, through which heated""airis discharged from said iiue k directly intok the room. The upperportion of the hot-air flue V conveys that portion of the hot air whichdoes notescape through the openings p and perforations o through theperforations a'. Illumination is secured between the vertical ngers h,and the space q between the lower edge of the irepot and upper surfaceof vthe rim q. A series of vertical fingers, 1. depending from anannular rim, s, supported in bearings t secured to the lower edge of'the coal-reservoir u, are

used to mix the unburned coal with the burning coal, when the fire isvery low, without revolving the rim and ngers g h or the grate c, eitherof which latter operations would endanger the ire by reason of theirtendency to shake it into the ash-pan. w is a boiler-seat, which may beopened to receive an appropriate cooking utensil. The casing surroundingthe reservoir u is perforated, and the heated air from this portion ofthe stove is discharged directly into the room. c is the ash-wall'- ofthe stove, and d a damper controlling the communication between theash-chamber e and the uef.

Having thus described my improvements, what I claim as new and useful,and desire to secure by Letters Patent, is

l. In 'combination with a stove or furnace, the external detachablebase-Hue A I I J, operating substantially as and for the purposehereinbefore set forth.

2. In combination with" the internal baseflue B P of a stove or furnace,the external detachable base-ilue A I I J, and the damper O forcontrolling the openings K and N; substantially as and for thepurposesset forth.

3. The bell-shaped grate c supported Within the fire pot j, incombination with and upon the arm a of the hot-air flue V, by aconcavoconvex joint, which permits the said grate to be tilted in anydirection, as and for the purposes set forth.

4. The rotary annular rim g, provided with the vertically-dependingfixed lingers h, and a finger, h', (one or more,) which is independentlymovable thereon, in combination with the firepot j andthe grate "o, asand for the purposes hereinbefore set'forth. v

The internal annular hot-air flue la l in bearingsl t immediately below,'and `in corn-AV binationwith, theooal-reservoiru, as and for thepurposeset forth.

6; Ina stove or furnace, the internal hot-V air luek, having its bottomplate or lower e walll ourved'alternately over and between the doors mand Windows m and its outer Wall provided with perforations o andopenings 1), in combination with the lire-pot j, doors m, 1

and Windows n, asland for the purposes set yforth. v i l Y Y Intestimony that I claim the foregoing im# ,provements, as abovedescribed,I have hereunto set my hand and seal this 2d day of July,1874. Y e

'ELIHU SMITH. [ns] Witnesses F. L. PERLEY, THEoDoRE MUNGEN.

